27 lines
1.1 KiB
Plaintext
27 lines
1.1 KiB
Plaintext
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What: /sys/kernel/iommu_groups/
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Date: May 2012
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KernelVersion: v3.5
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Contact: Alex Williamson <alex.williamson@redhat.com>
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Description: /sys/kernel/iommu_groups/ contains a number of sub-
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directories, each representing an IOMMU group. The
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name of the sub-directory matches the iommu_group_id()
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for the group, which is an integer value. Within each
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subdirectory is another directory named "devices" with
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links to the sysfs devices contained in this group.
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The group directory also optionally contains a "name"
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file if the IOMMU driver has chosen to register a more
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common name for the group.
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Users:
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What: /sys/kernel/iommu_groups/reserved_regions
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Date: January 2017
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KernelVersion: v4.11
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Contact: Eric Auger <eric.auger@redhat.com>
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Description: /sys/kernel/iommu_groups/reserved_regions list IOVA
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regions that are reserved. Not necessarily all
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reserved regions are listed. This is typically used to
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output direct-mapped, MSI, non mappable regions. Each
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region is described on a single line: the 1st field is
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the base IOVA, the second is the end IOVA and the third
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field describes the type of the region.
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